The new Surface 604 Shred eMTB has arrived for testing and review!
This Class 3 eMTB has some interesting features like 28 mph torque sensor based pedal assist, throttle to 20 mph, 2 battery options, and large 27.5″ x 2.8″ off road tires.
Some of the spec highlights are a 500 watt Bafang geared rear hub motor, a stock battery of 48V 10.4ah (14ah optional), Tektro Dorado hydraulic disc brakes, and a SRAM X5 drivetrain.
The $2,099 base price includes free shipping.
In this first part of the review you will get a detailed look at this bike with a BUNCH of pictures and the specifications.
Part 2 of the Surface 604 Shred review will give you info on the ride characteristics, results from the range test, pros, cons, and overall thoughts on this eBike.
Alright, let’s take a closer look at the Surface 604 Shred!
The Surface 604 Shred has a lot of performance features at an affordable price.
The 6061 aluminum frame uses hydroformed tubing to create some unique shapes and integrate the battery into the downtube. In this view you can also see how the top tube has been sloped to create more standover height.
There are 2 frame sizes offered:
S/M fitting riders in height from 5′ 2″ to 5′ 7″
M/L fitting riders in height from 5′ 8″ to 6′ 6″
The top tube and down tube connection has a large weld attachment to the head tube.
There is internal cable routing through the downtube for cable protection and a clean look.
Here is a closer look at the top & down tube connection to the head tube. The aluminum welds have a clean and solid look.
The top tube has trapezoidal look to it and the down tube is somewhat square with a rounded lower profile at the head tube area. These tubes add a bit of style and structure to the Shred’s look.
There are 2 battery options available for the Shred. The stock battery is a 48V 10.4ah (500Wh) lithium with Samsung 18650 cells.
There is an upgrade option for a high capacity pack that is 48V 14ah (672WH) and it uses the same Samsung 18650 cells. This upgrade adds $200 to the $2,099 base price. This is the battery being used in this testing & review.
The downtube location of the battery is good for overall balance and handling of the bike. It also has a clean look that blends in well with the overall look of the bike.
This is a reinforcement gusset that connects the seat tube to the top tube.
Just behind the seat tube is an attachment point for an optional rear rack that Surface 604 offers.
This is the Samox crankset with a 38 tooth chainring. It features a hollow axle design for lower weight.
The Wellgo pedals have a wide aluminum platform and reflectors on both ends of the pedals.
A SRAM X5 derailleur shifts through the 9 speed SRAM cogset that has a 11 tooth to 34 tooth range.
This is the 500 watt (750 watt peak power) Bafang geared rear hub motor that provides pedal assist up to 28 mph and up to 20 mph with the throttle only, making the Shred a Class 3 electric bike.
The 180mm rear disc brake rotor is attached to the left side of the Bafang rear hub motor.
One of the more unique aspects of the Surface 604 Shred is that it uses a torque sensor for the pedal assist system. This measures your pedal power and provides the proportional amount of assist based on the pedal assist level you are using.
Now let’s take a closer look at the 48V 14ah lithium battery (upgraded option) that powers the motor and front light.
The charge port is on the lower left side of the battery and has a rubber cover for weather protection.
On the upper right side of the battery is a USB charge port that can charge a smartphone or other USB chargeable device.
On the upper left side of the battery is the lock that is opened with one of the supplied keys (2 supplied).
The battery rotates to left side of the bike for removal once it has been unlocked.
This is a look at the square-ish downtube after the battery pack has been removed.
And a closer look at the lock and the upper battery connection point.
This is the lower battery connection point in the downtube.
The bike weighs 51.0 pounds with the battery removed and the total weight of the bike (with the 7.6 pound battery) is 58.6 pounds.
Here is a look at the battery removed from the bike with the charger plugged in to the lower left side.
The battery can be charged on or off the bike. It takes 4 to 5 hours to fully charge an empty battery for the stock battery 48V 10.4ah and 7 to 8 hours for the 48V 14ah battery.
The Surface 604 Shred is equipped with the SR Suntour XCM 30 suspension fork that provides 4″ (100mm) of travel.
On the upper left side of the fork is a preload dial that adjusts the spring rate of the fork to fit your riding weight and ride style.
On the upper right side of the fork is a lockout dial that prevents the fork from moving for an efficient ride on smoother roads.
A quick turn of the dial unlocks the fork for active suspension on rougher roads.
And speaking of rough roads, the Shred is equipped with the large 27.5″ x 2.8″ CST Patrol mountain bike tires.
These large air volume tires provide a built-in suspension effect when they are run in the lower air pressure range.
Additionally, the large tread patch on the ground gives the bike a very stable ride feel.
Tektro Dorado hydraulic disc brakes are spec’ed front and rear with 180mm rotors.
This is the Tektro Dorado disc brake with the 180mm rotor attached to the Bafang geared rear hub motor.
Now let’s take a look at the controls and ride position.
The Surface 604 Shred has a mountain bike performance ride position with a short stem and flat handlebars.
On the left side of the handlebar is a lock-on grip, Tektro Dorado front hydraulic brake lever, thumb throttle, and control pad.
The thumb throttle can be used as a boost for the pedal assist or it can be used as a pure throttle without pedaling. The throttle will assist up to 20 mph while pedal assist will assist up to 28 mph.
The 5 pedal assist levels are changed using the + and – buttons on the left side of the control pad.
There is also a walk mode that will help you walk the bike up a hill or stairs at a few mph. It is activated by holding the minus button on the control pad for a few seconds.
The “i” button cycles through information on the display like trip distance, odometer, max speed, etc. And the light button turns on the front light.
The Tektro Dorado brake levers have adjustable reach to fit the size of your hand.
There are sensors in each brake lever to stop the motor assist when either brake lever is engaged.
In the center of the handlebar is the color LCD display that provides information on:
- Battery level
- Speed, average speed, max speed
- Odometer, trip distance
- Pedal assist mode
There is a way to set a passcode so that the bike won’t start without it.
Under the display is a USB charge port for charging a smartphone or other USB powered device. In this picture the rubber cover has been removed.
On the right side of the handlebar is a lock-on grip, SRAM X5 9 speed shifter, rear Tektro Dorado hydraulic brake lever, and bell.
The Surface 604 Shred is equipped with the Selle Royale Nebula seat that has a performance style profile while still being comfortable for everyday riding.
Surface 604 offers an optional suspension seatpost to smooth out rougher roads.
The Axendo LED headlight is powered by the eBike battery so you don’t have to worry about separate batteries for the light.
The kickstand is bolted to the left side of the frame and the length is adjustable so that you can adjust the tilt of the bike when it is parked.
Surface 604 Shred Electric Bike Specifications
Frame: 6061 aluminum frame.
Fork: Suntour XCM 4″ (100mm) of travel
Motor: Bafang 500 Watt (750 watt peak power) geared rear hub motor
Battery: 48V 10.4Ah lithium stock battery. Optional 48V 14ah high capacity battery (+$200). Both batteries use Samsung 18650 cells. The 48V 14Ah is used in this testing & review: battery weight 7.6 pounds.
Assist Options: 5 pedal assist levels (plus walk mode) and thumb throttle. Torque sensor for the pedal assist.
Speed: Pedal assist up to 28 mph and/or throttle up to 20 mph which makes this a Class 3 eBike.
Display: LCD color display that provides information on the time, battery level, speed, average speed, max speed, odometer, trip distance, pedal assist mode. USB charge port under the display.
Drivetrain: SRAM 9 speed with 38t chainring and 11t to 34t cogset, SRAM X5 trigger shifter, SRAM X5 rear derailleur
Brakeset: Tektro Dorado hydraulic disc brakes with 180mm rotors and motor cut-off sensors
Tires: 27.5″ x 2.8″ CST Patrol Tires
Seat: Selle Royal Nebula ergonomic gel saddle
Accessories: Axendo LED headlight, bell, and, kickstand
Options: 48V 14ah lithium battery, Suntour NCX suspension seat post, Ergotec adjustable stem, rear rack.
Sizes: 2 frame sizes fitting riders from 5′ 2″ to 6′ 6″
Weight: 58.6 pounds. 51.0 pounds with the 7.6 pound battery removed.
Price: $2,099 USD with free shipping. +$200 for upgraded 48V 14ah battery.
Offers: 7 Day money back guarantee
Warranty: 1 year warranty
Now check out Part 2 of the Surface 604 Shred review with info on the ride characteristics, the range test, pros, cons, and overall thoughts!
Review Note: Each company pays a fee for a review on Electric Bike Report because of the considerable amount of time that it takes to provide an in-depth review of each eBike. A lot of time is spent on the full range test with distance & elevation profile, the wide variety of detailed pictures, in-depth video, and the write up with the specifications, ride characteristics, pros, cons, and overall thoughts. The reviews on Electric Bike Report are focused on providing you with a detailed “virtual” look at each eBike to help you determine if it is the eBike for you.
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